Portion of a lighting fixture



FIG. 1 is a perspective view of a portion of the lighting fixture showing my new design;

FIG. 2 is a front elevational view of a portion of the lighting fixture, the rear elevational view being a mirror image;

FIG. 3 is a right side elevational view of a portion of the lighting fixture;

FIG. 4 is a left side elevational view of a portion of the lighting fixture;

FIG. 5 is a top plan view of the lighting fixture; and,

FIG. 6 is bottom plan view of the lighting fixture.

The broken lines shown are for illustrative purposes only and forms no part of the claimed design. 

I claim the ornamental design for a lighting fixture, as shown and described. 